The Buffalo Bills’ Hall of Fame quarterback returned to Erie County Medical Center on Sunday because chemotherapy and radiation treatments have weakened his body. Even so, that’s a welcome trade for the excruciating pain cancer was causing inside his head.

“He’s doing pretty well,” Kelly’s brother, Dan, said Monday afternoon. “He’s past the midway point of his treatments, and his pain has reduced significantly.”

On the pain scale, Jim Kelly said he consistently was at a 10 around the time it was revealed his cancer had returned. Dan Kelly noted the pain has decreased lately to a two.

“We don’t know if the cancer is retreating,” Dan Kelly said, “but it’s a good sign.”

Dan Kelly said his brother expects to return home today.

“Chemo is tough, but Jim is a tough son of a ‘B,’ too,” Dan Kelly said. “We know it’s supposed to get tough before it gets better.”

As far as the Bills’ future is concerned, Jim has been monitoring the ownership situation more.

“We definitely will be involved somehow,” Dan Kelly said. “We’ve been approached by several different groups. We’re not making any commitments to anybody yet, but the No. 1 priority is that the Bills stay in Buffalo.”